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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 92 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Evaporator Tube Replacement - Auxiliary >> Installation Procedure

Installation Procedure

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  1. Install the auxiliary A/C evaporator tubes to the vehicle.
    2. Fig 1: View Of Auxiliary Heater Pipes, Clamps & Heater/A/C Tubes Retaining Nut & Stud
    GM691870Courtesy of GENERAL MOTORS CORP.
  2. Install the auxiliary A/C evaporator tubes (3) to the clamps (5).
    3. NOTE: Refer to Fastener Notice .
  3. Install the heater/A/C tubes retaining nut (4) to the stud (1) at the frame (6).

    Tighten:  Tighten the nut to 7 N.m (62 lb in).

    4. Fig 2: View Of Auxiliary A/C Evaporator Tubes & Nut & Auxiliary HVAC Module
    GM691871Courtesy of GENERAL MOTORS CORP.
  4. Install the auxiliary A/C evaporator tubes (2, 3) and the retaining nut to the auxiliary HVAC module.

    Tighten:  Tighten the nut to 16 N.m (12 lb ft).

  5. Lower the vehicle.
  6. Install the rear wheelhouse liner. Refer to Wheelhouse Liner Panel Replacement - Rear .
  7. Install the right assist step. Refer to Assist Step Replacement (Manual) or Assist Step Replacement (Z71 ) or Assist Step Replacement (Power) .
  8. Install the front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement .
    9. Fig 3: View Of Auxiliary A/C Evaporator Tubes At Condenser Tube & Accumulator
    GM612568Courtesy of GENERAL MOTORS CORP.
  9. Install the auxiliary A/C evaporator tubes (3) to the condenser tube (2) and the accumulator (5).

    Tighten:  Tighten the nuts to 16 N.m (12 lb ft).

  10. Recharge the refrigerant to the system. Refer to Refrigerant Recovery and Recharging .
  11. Leak test the fittings of the component using the J 39400-A  . See Special Tools .
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